Stamping machine



Nam 5 1934. SR. SWENSON 1,930,014

' STAMPING MACHINE F4 Filed Dec. 14, 1931 5 Sheets-Sheet l J52 z/ezzZZZ. 56272 zzeZ 22514075022 "I M W .fl@;M/: s 2456 022295.

S.-R.SWENSON 1,980,014

STAMPING MACHINE 1934- s. R. SV-VENSON v 1,980,014

STAMPING MACHINE Filed Dec. 14, 1931 5 Sheets-Sheet 5 I i I I 1/, all"70 '12 iazrzzzefflfiwy/zs 01W (541M714 W cs jgffarjzgs.

1934- s. R. SWENSON 1,980,014

STAMPING MACHINE Filed Dec. 14, 1931 5 Sheets-Sheet 5 .8. Q I 52 jPatented Nev. a, 193i 1,980,014

UNITED. STATES PATENT-OFFICE STAMPING MACHINE Samuel R. Swenson,Chicago, Ill. ApplicationDecember 14,-1931,Se:ial No. 580,897

13 Claims. (011197-437) The purpose of this invention is to provide anfor engaging'pins by which the carriage in one improved construction ofthe nature of a die of the forms is engaged at the base. stampingmachine adapted particularly for die Figure 1'? is a detail section atthe line 17--17 stamping, embossing or in any manner imprint on Figure151 on a larger scale than said Figing-marking upon an article oflimited size, such ure 14. 1 as a pen or pencil holder, pocket orfountain pen The apparatus comprises in general two sepor pencil, pocketknife, golf ball or other perarable parts, viz, a base upon which ismounteda sonal tool which may desirably bear the owners carriageforcarrying thearticleto be marked, and name or other identifying marking.The invendie-can'ying-and-operat'ing mechanism separatetion is alsoapplicable to check writing machines. 1y mounted for support on the baseas particularly The invention consists in the elements and hereinafterdescribed. features of construction shown and described as The baseindicated in its entirety by reference indicated in the claims. fletter, A, comprises as the main element a longi- In-the drawings:tudinally extending guideway member, A for the Figure 1 is a frontelevation of an apparatus carriage, B, which is to carry the article tobe embodying this invention. marked; and laterallyof said -guidewaymember Figure 2 is ,a right hand side elevation of the the base has astandard, A for supporting the same. mount, C, for the die carrier, D,said mount being Figure 3 is a rear elevation of the same. adjustable upand do on th standard, 2 f

20 Figure 4 is a vertical fore-and-aft section at positioning the diesat suitable distance above the line 44 on Figure 1. the article to bemarked for accommodating arti- Figure 5 is e dissected sectional viewshowi g cles of different dimensions requiring correspondthe die C y dadjusting mec ingly different spacing between the-carriage and tionbeing at the same plane as Figure 4. the dies.

25 Figure 6 is a section at the line eh e- The detail construction ofthe die carrier and ure 4. die-operating mechanism will first bedescribed.

Figure 7 is an inverted or bottom plan view of, Th di carrier t, i d t di totality by the base show the Carriage perating me referencecharacter, C, is formed with a sleevenism. like stem, 20, slidinglyjournalled on the post Figure 8 is a plan V Of the base With the "whichconstitutes the standard, A of the base, carria e d die-Carrying and opat meehathe post and sleeve stem having cooperating spline nism removed.i 1 and groove features, as seen at 1819, preventing F u 9 is a sectionat the e 011 the stem from turning on the post. For adjusture 4 viewingthe construction as not inverted. ing the mount up and down for thepurpose above 35 Figure 10 i a p h i Of the die i mount mentioned, thestem, 20, is furnished with a rack, and mechanism therein wit theOperating Cap 21, and there is journalled on the base adjacent to memberremoved for disclosing interior parts t tandard, A a spiral gear, 22,having an operand hav e eeliplihg s p y broken away ating handle, 23,said spiral gear being engaged to disclose certain detailswith the rackso that upon rotation of the gear in 1 u e 11 is a partly sectional sideelevation one direction or the other, the rack, and thereby showing thecarriage for the article to be marked the die earrier mount. W111 beadjusted up or adapted for holding a spherical article as a golf down, tspiral gear serving t 1 1a t as ball, section being made in the verticalplane of justed Without necessity for other l k means the fore-and-aftdiameter of the ball indicated The Carrier mount, c comprises extendingfrom 45 in dotted line at ni u i pq theremthe upper end of the stem, 20,a shell, 23, which Figure 12 is a side elevatwn of anoifher formterminates in a flange, 25, which constitutes the having the c i adaptedfor carrymg a s base element. of a circular head indicated in article tobe marked. 7 w totality by the numeral 24 which is extended for- F gil13 is a detail P View Of the Carrie wardly with respect to the stem, 20,so as to over- 50 shown in Figure 11. hang the carriage on the basemember, A said Figure 14 is a similar view of the carrier shown head,24, being inclined downwardly for thus in Figure 12; overhanging thecarriage, which is thus overhun Figure 15 is a detail section at theline 15-15 by the lower forward marginal portion of said on Figure 11.circular head.

, 55 Figure 16 isa detail plan view of spring clasps Upon the flange,25, there is mounted a mem-= ber, 27, consisting of thermally conductiveelectrically insulating material as hard rubber in which there isprovided a cavity seen at 28 for accommodating an electrical heatingunit, 30, and switch connections, 31, for controlling the circuit. Thiscavity is shown closed at the top by a disk, 32, with interposedinsulation indicated at 33. The thermally conductive electricallyinsulating element, 27, rigidly and permanently secured to the flange,25, may be regarded as a unitary part of the die-carrier mount, and assuch unitary part of the mount it constitutes the bulk of the circularhead, 24, extending, as described, from the mount stem forwardly withdownward inclination overhanging at its forward lower side the carriageon the base for carrying the article to be marked.

This circular head comprises, as will be understood by reference toFigure 4, an annular seat, 35, frusto-conical in form with the widerbase at the lower side.

Mounted upon this frusto-conical annular seat there maybe ,seen inFigure 2 the die carrier indicated in totality by reference character,D, and comprising a frusto-conical member, 40. On the innercircumferential face of the member,, 40, there-are formed rectangularchannels, 41, in planes radial with respect to the annular seat anddie-carrying member, 40, said channels traversing the entire width ofthe inner circumferential face of the member, 40, for accommodating dieshereinafter described. In said inner face of the frusto-conical member,40, there is formed proximate the upper end a circumferentiallyextending groove, 42, which crosses all the radial channels, 41, saidcircumferential groove being substantially the same width as said radialchannels.

The dies for stamping the article to be marked are in the form of shortrods indicated by reference numeral, 50, non-circular in cross sectionand preferably rectangular and most preferably square as shown. The diesbear at one end the letter or figure or other character which it istheir function to imprint when they are to be marked, and as indicatedin the drawings, these markings comprise the full alphabet and numeralcharacters zero (0') to nine (9). It will be understood that the diesmounted in their respective channels are reciprocable therein for thestamping or marking stroke. And that for this marking stroke the diewhich is to be operated must first be positioned for making this strokedirectly toward the article mounted for marking, meaning by directlythat the stroke should be at right angles to the plane of the surface onwhich the marking is to be imprinted.

And upon considering this construction as thus far described it will beunderstood that for thus positioning the dies as they are individuallyrequired successively for the desired mark, the die carrier must berotated to bring the particular die into the position described, viz,for making its stroke directly toward and at right angles to the planeof the article to be marked. For thus positioning the dies individuallyas required, the

annular frusto-conical die-carrying member, 40,

mounted rotatably upon the frusto-conical seat, 35, is furnished with anoperating member, 45, in the form of a cap having an operating handle,46, and frusto-conical flange, 47, which overhangs and affords means ofsecurement to the frustoconical die-carrying member, 40, as indicated bysecuring screws, 48. It may be understood that the operator by means ofthe handle, 46, may adjust the die carrier, 40, to bring any selecteddie into proper marking position. In order that the operator mayidentify the die to be thus set for marking, the cap member, 45, bearsupon the outer surface of its frusto-conical flange, 47, the alphabetand numerals above mentioned in proper circumferential order, and thedies are assembled in their proper channels in the inner face of themember, 40, radially opposite their identifying markings respectively onthe outer surface of the cap flange.

It will be noted that to permit the emergence of the dies downwardly formarking, an opening must be made in the flange, 25, at the point in thecircumference at which it overhangs the carriage and the article thereonto be marked; and for ensuring exactness in the position of the diesrespectively when performing the marking stroke, there is mounted atsaid aperture in the flange a guide plate, 51, having an aperture, 52,dimensioned for fitting and guiding the dies in their marking stroke.

Upon further considering this construction it will be noted that sincethe guide aperture, 52, mustbe accurately fitted to the dies in order toserve its purpose of ensuring accurate position of the dies, it isessential that the operator in rotating the die carrier for bringing theproper die into operative position, should be able to halt the rotativemovement with the proper die accurately registered at its lower end withthe aperture, 52; and it may be recognized that it is not practicable torely upon the acuteness of vision of the operator for determining whenhe has the particular letter at the position for registering the diethus accurately with the aperture; accordingly for ensuring thisaccuracy of registration, there is formed in the upper edge of thecarrier, 41, for each die, a V-shaped notch, 55, with its apex in exactalignment with the die channel; and the cover plate, 32, whosecircumferential margin overlaps and rests upon the upper edge of thedie-carrying member, 40, is formed as seen at 56, to constitute a springdog having V-shaped head for engaging the V-shaped notches as they arebrought in the rotation of 120 the die carrier under said V-shaped head.

For giving the dies their marking stroke, there is provided a lever, 60,fulcrumed at 61 on the die carrier mount at the rear side thereof, saidmember extending substantially horizontally and 125 thereby obliquelywith respect to the inclined head of the mount and the inclined carrier,through a narrowslot. 61, which is cut in the lower forward edge of thecircular head and die carrier seating member, 24, said lever having at130 its forward end a terminal, 64, dimensioned for entering thecircular slot, 47, in the inner frustoconical face of the die carrier,40, and thereby dimensioned for engaging the notch, 50, with which eachdie is provided as above described, and thereby also dimensioned fortravel in the radial channels in which the dies respectively are seatedwhen the lever is giving the die its marking stroke.

For actuating this lever for the marking stroke, the die carrier mounthas at the forward side of the sleeve stem, 20, as shown at 67, avertically extending hollow boss which accommodates a compressionspring, 68, reacting at its lower end on the bottom web of the hollowboss; and there is provided a plunger for compressing the springcomprising for reasons hereinafter explained, a coil spring, 69, muchstiffer than the spring, 68, said plunger consisting of a sleeve, '70,dimensioned for extending within the spring, 68, and 150 having at itsupper end a flange, 70 for stopping on the upper end of said spring andhaving its lower end closed by a plug, 70 the coil spring,

69, being accommodated in the sleeve, 70, stopped at its lower end onthe plug, 70 and supporting at its upper end a head block, 71, fittedslidingly in the upper end of the sleeve and extending upwardly beyondsaid sleeve and for slidingly in the upper end of the bore of the boss,67.

To this head block the lever, 60, is pivotally connected, as seen at 60and to this head block also there is pivotally connected a lever, '73,which is fulcrumed on the mount at '73, and which extends transverselyof the lever, 60, through a slot, '74, formed for that purpose in theshell, 23, of the mount, and at its outer end provided with a knobhandle, '75, for manual operation, which the operator will perform whenupon rotating the index cap, 45, to bring the letter or figure to bemarked to position by the snapping of the V-shaped dog, 56, into theV-shaped notch, is advised that the proper die is in the properposition.

For cooperating with the die carrier and its mounting and operatingmeans, there is supported by the base at the part which is overhung bythe die carrier as above described, a carriage for holding the articleto be marked.

The form and construction of this carriage and the means for holding thearticle to it, and the means of adjustment of either the carriage or theholding means or both to position the article properly for receiving theimprint of the die, is necessarily varied according to the form andcharacter of the article to be held and marked; and in the drawingsthere are illustrated three forms of carriage and holding means.

The first, adapted for holding a pen or pencil or like slender andrelatively long article, is shown in Figure 1; the second, adapted forholding a golf ball or other round article which is to be markedcircumferentially' as distinguished from longitudinally, is shown inFigure 11; and the third form, adapted for holdinga flat article to bemarked longitudinally on its flat surface, such as a card case, is shownin Figure 12. The last form it will be seen may readily be adapted for acheck writer.

The form shown in Figure 1 will be first described.

In this figure the carriage indicated at is mounted slidingly on thebase, as indicated by the cooperating guideways, 81 and 82, of the baseand carriage respectively, and carries rigid with the carriage a seat,83, for the article to be marked, said seat having the face on which thearticle is to be lodged, formed with a V-shaped notch or groove, 83*,extending longitudinally with respect to the cooperating guideways ofthe carriage and base.

For holding the article to the seat and thereby to the carriage, thereis provided a clamping yoke lever, 84, pivoted to the carriage, as seenat 85, adapted to be swung in an are about its pivot to carry theclamping yoke end, 86, down onto the article lodged on the seat, 83, inthe notch, 83*, the sides of the yoke end clasping and being guided bythe seat, 83. And for operating this clamping yoke lever, it isfurnished at its fulcrum with a worm gear pinion. 8'7, which meshes witha worm, 88, carriedrotatably by a latch member. 89, pivoted to thecarriage, as seen at 90, and adapted to be swung about said pivot tocarry the worm into and out of mesh with the worm gear pinion, 8'7, areleasable catch being provided, as seen at 91, for holding it in mesh.An operating knob, 93, on the worm serves for rotating it to operate thegear pinion for stressing the yoke end onto the article lodged on theseat, 83.

To release the article the operator operates the release catch, 91,disengaging the worm from the pinion and permitting the yoke to be swungup off the article. In this form the carriage mounted slidingly on thebase mentioned is arranged for step by stepadjustment to set the articlesuccessively in position for receiving successive imprints from thesuccessively adjusted dies for producing the complete label desired,

For accommodating the means for step by step adjustment, the base ischambered at the under side, as seen at 98, said chamber having its rearWall at the middle part of its length deflected outward rearwardlyforming a recess as seen at 98*, for accommodating a bracketmember, 95,mounted fixedly by securement to the top wallof the chamber, as seen at95, said bracket'serving for carrying the step-by-step adjustingmechanism. A slot, 99, is provided'in the top, opening into the chamber,and the carriage has a stem, 100, which protrudes through the slot andat the inner end has secured to it a cross head, 101, for locking thecarriage slidingly on the base with the cooperating guideways, 81 and82, properly engaged with each other for sliding adjustment; and astretched spriizg, 120, in the chamber reacting between the chamber walland the stem, 100, operates for holding the carriage normally,

. at one limit of, its range of sliding movement; and

parallel with the slot, 99, there is formed a slot,- 102, with which arack bar, 103, which is carried rigidly by the carriage registers, formeshing with guideways, 81 and 82.

For operating the pawl 107 there is connected thereto a lever, 109,mounted on the rear side of the base and extending into the recess, 98*,of the chamber, 98, through a slot in the deflected part of the rearwall, as seen at 98 and a spring. 110, is arranged reacting. on the pawland thereby on the lever in the direction for retracting the pawl overthe ratchet disk. The stroke of the lever is limited for limiting thestroke of the pawl by the extentof the slot, 98.

For releasing the pawls to permit the carriage to be retracted to normalposition by the reaction of the spring, 120, there is provided mountedpivotally on the shaft, 105, a lever, 121, having projecting pins, 122and 123, positioned for encounter with the pawls, 107 and 108,respectively in the direction for disengaging them from the ratchetwheel. An operating rod, 121*, connected to the arm, 121 of the lever,121, extends out through the end of the casing for manual operation tooperate the lever for disengaging the pawls, and a stretched spring,120*, reacting between the lever, 121, and the casing to which thespring is connected, as seen at 120 operates for retracting the leverand the pawl-releasing pins to normal position.

The construction of Figure 11 will now be described. This constructionis designed for marking a round article, and particularly a sphericalL56 article, as a golf ball on which the marking is to be made in acircumferential zone. For holding the article, which may be referred toas the ball, there is provided a carriage, 110, removably mounted infixed position on the base as' by means of pins, 111, 111, at diagonallyopposite corners of the carriage, engaging holes correspondinglypositioned in the base. This carriage hasa'recess, 112, in its upperface wide enough to accommodate the ball and the clamping and adjustingmeans.

At the rear side of the recess there is provided a centering stud, 113,which is adapted for the function of centering the ball by having itshead formed as a spherically concave seat approximately agreeing in theradius of its spherical concavity with the radius of the ball. 'At theforward side of; the recess axially aligned with the centering stud,113, there is journalled in the carriage a short hollow shaft, 114,which at its inner end carries a spur-toothed or peripherally serratedwheel, 115, with whose peripheral serrations a spring detent pawl, 116,is arranged to engage as the shaft and wheel are rotated. The hollowshaft is interiorly screw-threaded, and there is screwed through it athreaded stem, 117, of a facially serrated concave disk, 118, the radiusof the concavity of its serrated concave face being approximately thatof the ball to be clamped between said disk and the centering stud, 113.At the forward end of the shaft, 114, at the forward side of thecarriage, said shaft is furnished with an operating knob, 119, which isattached to said shaft in any suitable manner avoiding the threadedstem, 1, 13, which protrudes from theknob at the forward side of thelatter, and is, there furnished with an operating head, 117, forscrewing it through the shaft, 1l4 to clamp the concave disk, 1'18,againstthe ballfand thereby clamp the ball against thecentering stud,113.

Upon consideringpthis constructionit will be understood that thelserated while the operator holds the knob, 119, the

ball will be clamped between the centering stud and the disk with itsdiameter aligned with the centering stud and the screw, 117. And theball being thus clamped in position, the operator by means of the knob,119, will rotate the hollow shaft, and with it the threaded stem whichis screwed through it, and thereby rotate the ball about its diametricaxis to position it for successive imprints in the equatorial zone oftheball; and this rotation it will be understood will be made step by stepas the spring detent pawl, 116, engages the successive peripheralserrations of the wheel, 115, said serrations being at intervalscorresponding to the desired intervals between the successive markingsat the equatorial zone of the ball.

The construction of Figure 12 will now be described.

This construction, designed'for holding a fiat article to be marked onit's fiat surface, comprises \a flat faced carriage, 125, mountedremovably on the base by pins, 126, 126, engaging holes in the base; andretained by spring clasps, 126, as seen in Figure 16 and for holding thearticle on. the

flat face of the carriage there is hingedly connected to the carriage atthe. rear side thereof a nearly right angular part, 127, comprisinglugs, 128, by which it is pivoted to the carriage as 7,, beingrotate edto withdraw the concavedisk,.-11'8,. to; the limit at 125 of thecarriage and substantially across that cavity for securement of theother end to the carriage, as seen at 131.

This spring it willbe recognized operates for holding the lipnormallystressed upwardly from the fiat upper face of the carriage, andfrom the flat article to be marked lodged on the flatface of thecarriage for that purpose. And to adapt the right angular part, 127, tohold the article securely in position for marking, there is provided ashaft, 135, extending through the carriage from front to rear across thecavity, 125*, and screwed through the rear wall of the cavity protrudingagainst the limb, 128, this shaft being provided at the forward end withan operating knob, 136.

I claim:

1. A stamping machine comprising in combination with a 'fixed basehaving a rigid'upwardly extending post, a die carrier mount slidinglymounted on said post having a part projecting therefrom overhanging thebase;'-a die carrier mounted on said mount movably with respect to thelatter at the overhang of the mount over the base transversely of thedirection in which the mount projects from the post for said overhang,said carrier mount having its slide bearing portion furnished with arack. and a manually operable gear member journalled on the baseengaging the rack for adjusting the carrier to fixed positions up anddown on the post; a plurality of .dies carried by the carrier in saidmovement of ing the carrier in its path of movement trans- I versely ofthe overhang of the mount to locate a selected die at predeterminedposition above the carriage, the dies being individually mounted in thecarrier for movement toward the carriage,

and means mounted on the die carrier mount engaging the die thus locatedand movable for actuating the die in the carrier toward the carriage forimprinting the article carried by the latter.

2. The construction defined in claim 1, the gear member journalled onthe base for engaging the rack being a spiral gear, whereby it isadapted to hold the carrier fixedly at adjusted positions.

3. A stamping machine comprising in combination with a fixed base havinga rigid upwardly extending post, a die carrier mount slidingly mountedon said post having a part projecting therefrom overhanging the base; adie carrier mounted on said mount adjustably with respect to the latterat the overhang of the mount over the base transversely 'of thedirection in which the mount projects from the post for said overhang;manually operable means for adjusting the under the overhang of the diecarrier mount; means for adjusting the carrier in its path of movementtransversely of the overhang of the mount to locate a selected die atpredetermined position above the carriage, the dies being individuallymounted in the carrier for'movement toward the carriage and meansmounted on the die carrier mount engaging the die thus located andmovable for actuating the die toward the carriage for imprinting thearticle carried by the latter, the die carrier being mounted on thecarrier mount for rotary adjustment in a plane oblique to the directionof actuation of the dies for imprinting, the dies having guide bearingsin the carrier at like oblique angle to the plane in which the carrieris adjustable, and lever means having fulcrum carried by the mountarranged for engaging the individual dies respectivelyat predeterminedposition of the individual die above the carriage, and manually operablemeans for actuating said lever means for giving the engaged die itsimprinting stroke.

4. A stamping machine comprising a fixed base and a mounting elementsecuredto the base and having a part projecting from its securementoverhanging the base; a die carrier rotatably adjustable on the mount ina plane inclined downward toward the base-overhanging side of the mountand arranged for carrying dies slidably therein, and a circular seriesof dies carried thus slidably positioned with respect to said plane ofinclination of the mount for being each vertical at its lowestbase-overhanging position; means supported on the base under theoverhang of the mount for holding the article to be stamped; means forrotatably adjusting the carrier in said inclined plane to locate aselected die at said lowest position overhanging said article-holdingsupport, and means arranged to operatively engage the die thus locatedfor actuating the die toward said article support for imprinting thearticle held on the latter.

5. The construction defined in claim 4, the die carrier comprising anannular member, the mount having an annular seat for saidannular'carrier, and the carrier being dimensioned and arranged forencompassing said seat, the slideways for the dies being provided at theinner side of the annrlar form of the carrier; a cap member formed forencompassing and covering the annular part of said die carrier, andmeansforsecuring said encompassing and covering member to "the diecarrier, said cap member having a handle for manually adjusting it andthe cover on the seat of the carrier on the mount.

6. A stamping machine comprising a fixed base and a mounting elementsecured to the base and having a part projecting from its securementoverhanging the base; a die carrier comprising an annular member mountedon the carrier mount for rotary adjustment about the axis of its'annular form in a plane inclined downward toward the base-overhangingside of the mount, and arranged for' carrying dies' slidably therein,and having a, circular series'of dies thus slidably carried positionedwith respect to .the plane of inclination of the mount for being eachsubstantially vertical at its lowest base-overhanging position, saidannular part being frusto-conical with the conic angle corresponding tothe obliquity of the axis of rotation to said vertical position of theslidably carried dies at their lowest position; lever means havingfulcrum carried by the mount and located at the level of the low side ofthe inclined carrier and at the opposite side of said axis from said lowside; means for engagement of said lever means with the die in the diecarrier at said low side, and manually operable means for actuating saidlever means for giving the engaged die its imprinting stroke, said levermeans at normal position extending horizontally from the fulcrum to thepoint of engagement with the die, whereby the impulse communicated tothe die by the lever is vertical.

7. A stamping machine comprising in combination with a fixed base havinga rigid upwardly extending post, a die carrier mount slidingly mountedon said post having a part projecting therefrom overhanging the base, adie carrier mountedon said mount movably with respect to the latter atthe overhang of the mount over the base transversely of the direction inwhich ,the mount projects from the post for said overhang; manuallyoperable means for adjusting the mount to vertically fixed position onthe post; the carrier mount being mounted on the post with a seat forthe carrier in inclined position with its lower side portion projectinglaterally of the post overhanging the base at one side of the post, thecarrier being rotatably adjustable on the mount in the plane ofinclination of the carrier; a plurality of dies carried byv the carrierin said movement of adjustment, said dies being arranged in circularsuccession about the axis of said rotatable adjustment; a carriage forthe article to be marked mounted on the base under the overhang of thedie carrier mount; means for operating the carrier for its said rotativeadjustment in its path of movement transversely of the overhang of themount to .ocate a selected die at predetermined position above thecarriage, the dies being individually mounted in the carrier formovement, toward the car riage, a die-engaging and actuating levermemher having fulcrum carried by the mount, said lever extendinghorizontally under the carrier mount indirection intersecting the axisof the latter and arranged at its free end for engaging the dies in thecarrier at the low side of the latter and opposite side of the carrieraxis from the lever fulcrum, and connection for manual operation of saidlever for actuating the die engaged by it toward the carriage forimprinting the article carried by the latter, the dies having each afeature for such engagement by the lever arranged for entrance of thelever end into such engagement in the rotary movement of the carrier onthe mount for locating the die in imprinting position.

8. In a machine for die marking having a base for holding the article tobe die marked, the base having a surface guideway and a carriage for thearticle to be markedarranged for movement along the guideway; a springreacting between the base and the carriage for holding the carriagenormally at one limit of its range of movement along the guideway; meansfor adjusting the car-- to permit its return by the reaction of thespring to normal position.

9. In a machine for die marking having a base for holding the article tobe marked and an overhanging structure containing die-operatingmechanism, means for positioning the article to be marked comprising incombination with the base having a surface guideway for a carriagearranged for sliding along the guideway, the base being apertured in thesurface on which the guideway extends for accommodating carriageoperating connections extending into the cavity, said connectionsincluding a rack carried by the carriage and an abutment for reaction ofa spring, a spring reacting between the abutment and the wall of thecavity for holding the carriage normally at one limit of its range ofmovement on the guideway; a gear journalled in the cavity cooperativelyassociated with the rack for movement of the carriage along theguideway; manually operable pawl and ratchet means for rotating the gearin the direction for moving the carriage in opposition to the reactionof said spring; and manually operable pawl-releasing means for releasingthe carriage from the control of the rack and gear connection to permitits return from normal position by the reaction of the spring.

10. In a die stamping machine, in.combination with a base, a die carrierand a support therefor carried by the base, the carrier being adjustableon said support for positioning a selected die in imprinting position,and manually operable means for effecting said adjustment; a carriagefor the article to be marked adjustable along the base to locate thearticle in die-marking position; spring means for holding the carriagenormally at one limit of its range of adjustment; manually operablemeans for so adjusting it step by step to successively position thearticle for receiving successive die markings. the last mentioned meanscomprising rack and gear connection with the carriage, and pawl andratchet means for operating said rack and gear connections comprising anactuating pawl and a locking pawl, and manual operating means foroperating the locking pawl for releasing the rack and gear connectionsto release the carriage for its return to normal position.

11. In a die stamping machine in combination with a base, a die carriersupported thereon and manually operable die and adjusting and operatingmeans; a carriage for the article to be marked comprising a membermounted slidingly on the base for movement transversely of the directionof the marking stroke of the die; manually operable pawl-and-ratchetmechanism having a feeding pawl and a locking pawl, and rackand-gearmeans for actuating the carriage operatively associated with saidpawl-and-ratchet mechanism, and automatic means for retracting thecarriage upon release of the pawl-and-ratchet mechanism for releasingthe rack and gear connections.

12. In a die stamping machine in combination with a base and a diecarrier supported on the base and having manually operable andadjustable operating means; a carriage for the article to be markedsupported on the base, the carriage having a flat upper face forlodgment of the article to be marked, and clamping means for holding thearticle to the carriage comprising a member hingedly mounted on thecarriage at the rear side thereof having a lip overhanging the flat faceof the carriage from the rear, said member having a limb extending fromthe hinge in direction transverse to the lip and an operating screwscrewed through the carriage accessible at the forward side for manualoperation and protruding at the rear side into engagement with saidlimb.

13. In a die stamping machine in combination with a die carriersupported thereon and die-adjusting and operating means; a carriage forthe article to be die marked having means for holding the articlerigidly in the carriage and adapted for clamping a ball at a diameterthereof, said means comprising an axially fixed stop for the ball at oneside and an axially adjustable stop at the diametrically opposite side,the adjustable stop being screw-threaded for said axial adjustment; ahollow shaft interiorly threaded for mounting said axially adjustablestop, said hollow shaft being journalled on the carriage for rota-- tionabout its axis and furnished with manually operable means for rotatingit step by step, and means for automatically arresting the rotationafter each such step, said screw-threaded axially adjustable stop havingat the inner end a head for engaging against the ball for clamping itand having the outer end arranged for manual operation to screw, itthrough the hollow shaft for clamping.

SAMUEL R. SWENSON.

